Gage-glass for registering devices.



E. P. GEOFF.- GAGE-GLASS FOR REGISTERING DEVICES.

APPLICATION. FILED APR. 28, I911..

Patented May 23,1916.

HHW TTLH ATTORNEYS UNITED STATES PATENT oEEIcE.

EcowIn r. eEoEr, E nannon I'IEIeII'rs, NEW JERSEY.

GAGE-GLASS non REGISTERING nEvIoEs.

Application filed April 28, 1911. Serial No. 623,844.

To all whom it may concern:

Be it known that I, EDWIN P. Gnorr, a citizen of the United States, residing in Haddon Heights and county of Camden, State of New Jersey, have invented a new and useful Gage-Glass for Registering Devices, of which'the following is a specification.

" pressure In devices heretofore employed for registering the height of a fluid, considerable difarisen, especially in cases wherein the registering device is used in connection with boilers generating high steam, due to the cutting or erosive action of the high pressure steam moving at a high velocity through the registering device. If a leak occurs it is generally between the glass and its joint and the cutting action of thesteain and hot water leaking through such openings soon scores and cuts the glass to such. an extent that the same becomes useless. and it is necessary to .sides of the glass so has arisen owing insert a new glass.

Considerable difliculty and annoyance has also arisenin prior devices with which I am familiar, owing to the fact that the packing material which forms'the joint,'-has a different co-efficient of expansion fromth'at of the glass itself or the casing so that the packing or sealing material forming the joint adheres to the glass or to the casing and as the expansion and contraction occurs the packing is torn from its seat to such an extent as to permit means employed for forming av fluid tight seal between the glass. and its casing and also due to the fact that the action. of the heat and of the water and steam not only causes the deterioration of the packmgmaterial forming the joint but also tends to dissolve the glass itself with consequent re- Specification of Letters Patent.

the ends and sides are coated either by with a material .ent preferre 'a metal incased glass embodying my invensame being viewed from Patented May 23,1916.

duction in efficiency and increase in cost of maintenance. As the glass wears away, difficulty arises in maintaining the proper engagement of the glass with its 'seat or gasket.

In order to overcome the difficulties above enumerated which arise in practice, I have devised a novel glass for registering purposes which is incased or enshrouded 1n such a manner as to materially increase the life of the glass and prevent, in a'great.

measure, the destructive action of the. fluid. My. invention further consists of a novel manner of incasing the glass to increase the life thereof and to provide means for forming a double seal of the glass with its casing and the means for securing the glass in assembled position with respect thereto.

My invention further consists of a novel construction of an incased glass in which mechanical methods or electrical deposition which will enshroud the ends and sides of the glass and the entire glass with the exception of the reflex surface and the sight portion in alinement therewith, such material being capable of resisting the cutting action of the steam,

water and heat.

It further consists of other novel features of construction, all as will be hereinafter.

fully set forth.

For the purpose of illustrating my inven- Y tion I have shown in Y the accompanying drawing one form thereof which is at presby me, since the same has been found in practice to give satisfactory and reliable results, although it is tobe understood'that the various instrumentalities of which my invention consists can be variously arranged and organized and that-my invention is not rangement and organization of these instrumentalities as herein' shown and described. V

Figure 1 represents a perspectiveview of tion,*the same being viewed from a point In view of the front face thereof. Fig. 2 represents an elevation of my novel device, the the rear face. Fig. 3 represents a sectional elevation of a fluid gage showing the manner in which the gage limited tov the precise arglass is secured when used in connec f and this coating is also dicated at? in order to 8 of the glass 'so that the glass is incased or I chanically applied. This of any suitable material and is preferably a material which is compa glass. isplaced in extensions 11 vided with a opening 16 tion with one well known type of water (3 represent sectional elevations of different forms of bulls-eye glasses showing the manner in which the same are incased.

Similar numerals of reference indicate corresponding parts inthe figures.

Referring to the drawings: In order to more clearly set forth onemanner in which my'novel glass may be assembled with respect to' the gage frame, I have shown the same in Fig. 3 in assembled position with respect to a well known type of water gage frame, but to the construction of such frame I make no claim, since the same per 86 forms no part of my present invention. and is but one way of using my novel type of gage glass.

l designates the glass, which in Figs. 1, 2, 3 and 4 is shown as substantially rectangu lar in form" but having its ends rounded. The rear face of the glass is provided with grooves-2, thereby forming a-reflex face.

3 designates a coating which covers not.

only the'sides of the glass but also a portion of the side andend faces 4, the coating being bent around'as indicated at 5, in or-.

der to engage the front face 6 of theglass,

' bent aroundas is 1nen'gage the rear face ensliroudedwith the exception of the reflex portion 2, and the sight portion 9. This coating 3 may be. applled to the glass in any desired manner and may be mechanically n jf' 'a pplied or the same may be electrically deposited thereon, and in vis employed, suchas copper, it is preferably electrically deposited, while if I employ a coating such as lead, the same may be mecoating 3' may be ratively soft relaso that when the position, the coating 3 will fill the space between the glass and its tively to the 7 glass itself seat and cause a fluid-tight sealto be formed at such point- My novel construction of incased glass is shown in Fig. 3 'in assembled position, wherein 10 designates a frame provided with leading therefrom, and prosight opening 12. The frame is also provided with an opening 13 which is closed by means of a nut 14, ,a packing ring 15 of any desired material being placed between the nut and its seat so as to 'form a fluid tight site end of the casing isprovided with an closed by a nut 17, and a packing ring 18 is also employed to form a fluid tight joint between the nut and the frame.

Surrounding the sight 0 ening on its inher face is a seat 19 with which the forward a face case a nietal coating n in g 5 joint at such point. The oppo-- portion 5 of the coating 3 is adapted to be in contact-to form a fluid tight seal at such point.

20 designates a sealing member, the forward face of which is seated against the rear 7 of the nut in order to form a fluid tight seal, it being noted that the member 20 has openings 21 and 22 so that the fluid may pass in rear of the glass 1. The inner face of the sealing member 20 is provided with a suitable coating 23 whichforms a background for the glass, and such coating may be painted thereon or chemically deposited.

The rear face of the seat for the spring 2i which abuts against an adjustable member 25 carried by the frame and secured in adjusted position by means of a nut 26 which also prevents leakage at such point. It will be seen from the above that in the type of'frame seen in Fig. 3, the gage glass is 'yieldingly retained against its seat, and a double seal is formed, both on the'front and rear face of the glass while the sides or outerportion of the glass are protected from the action of the acid 1n the water, as is evident and also from the be used in conjunction with any desired form v or type of'glass which 'isused in connection with registering or indicating mechanism and 6 I: have shown a type of glassknown asthe bulls-eye. In Fig. 5, 27 is the glass, the outer periphery of which has varying diameters 28, 29 and 30 with which the coating 31 is said coating being bent around the front face of the glass as indicatedat' 32, so as to cover the same with lthe exception of the sight opening 33.

p In the form shown in Fig. 6, 34 is the glass having different diameters 35 and 36 which are covered by a coating material 37 but in this embodiment I have not shown the coating material as extending over the ends of the glass 34.

By the employment of an incased glass, a constant thickness of glass at all times is provided, and a double seal' on the glass is formed which protects the surfaces with the exception of the reflex surfaces from the action of the boiler water, thereby preventing the disintegration of the glass. The coating prevents rapid changes in temperature and preventsdisintegration of the material which forms the gasket, which in this in intimate contact,

case is the coating material which incases' the same.

In so far as I am aware, I am the first in the art to incase a glass in the manner herein described to prevent disintegration of the glass and maintain the glass at a contant thickness and to form a sealing coating whichfenables one to dispense with the gas-' ket originally employed'in connection with the gage glass and it is to be understood that the claims to such a construction are to be interpreted with corresponding scope.

It will now be apparent'to'those skilled in the art that in cases wherein a double seal is formed, as herein disclosed, a greatly improved result is obtained, since before any leakage'can'occur the fluid must force its Way completely around the glass between the shroudingor incasing coating and between the seal formed between the glass and that portion of the coating which abuts against this casing and by formin a double seal, as herein disclosed, the cutting and chipping of the glass by the action of the steam, water or other fluid beingmeasured, is positively prevented.

It will now be apparent that I have devised a novel and useful construction of a water gage,which embodies the features of advantage enumerated as desirable in the statement of the invention and the above description, and while I have in the present instance shown and described a preferred embodiment thereof which has been found in practice to give satisfactor and reliable results, it is to be understo that the same is susceptible of modification in various particulars without departing from the spirit or scope of the invention or'sacrificing any of its advantages.

, Having thus described my invention, what near the outer periphery forming seats, and

I claim as new and desire to secure by Letters Patent, is:

1. As a new article of manufacture, a registering glass for a gage frame, comprising a substantially rectangular shaped bar of solid glass having a reflex face and a sealing metal surrounding the sides and ends of the glass and extending over a portion of the rear face thereof to form a seat and define the registering opening and extending over. a portion of the front face to form a seat,

and define the sight opening.

- 2. As a new article of manufacture, a registering glass for a gage frame, comprising a substantially rectangular shaped bar of solid glass having. reflexes onthe, rear face and a sealing metal gasket forming therewith-a concrete unitary structure, said gas- 7 v -ket surroundlng the sides and ends of the lass and extending over the front and rear aces thereof to form front and rear seatsand define the rear registering face and the front sight face of the gage.

3. As a 'new article of manufacture, a registering glass for a gage frame, comprising a rectangular bar of solid glass having its ends rounded and its front and rear faces a sealing metal surrounding the ends and sides of the glass and extending over said seats to form a seat of sealing "metal at such places and to define the front sight face and the rear registering face of the glass.

4 EDWIN P. GRQFF.

' Witnesses: v

H. S. FAIRBANKS, O. D. McVAY. 

